The products uneven shrinkage caused of some factor, this will creates deformation which we call it warpage.

It's a quite normal problem on the plastic products, So how can we solve it?

1. Extending holding pressure time;
2. Design a right gate tipe which will loss minimum pressure.
3. Increasing cooling time;
4. Adding mold cooling tube;

5. Changing product structure, such as adding rib, improving product wall thickness, etc;